单项选择题

It seems that the writer ______.

A．is interested in the imaginary life forms
B．is eager to find a different form of life
C．is certain of the existence of a new life form
D．is critical of the imaginative people

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热门试题

单项选择题

The passage is mainly concerned with ______.

A．the feasibility of life existing on other planets
B．the description of Mars's physical environment
C．the comparison between the physical features of Mars and the Earth
D．the feasibility of men's migrating onto Mars

单项选择题

Even most imaginative people have to admit that ______.

A．human societies are as advanced as those on some other planets
B．planets other than Earth are not suitable for life like ours to stay
C．it is difficult to distinguish between organic parts and inorganic parts of the human body
D．organisms are more creative than machines